If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

How many sides does a circle have?

I shave every day, but my beard stays the same. What am I?

What is full of holes but still holds water?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

In the image below, can you find the value of an angle(y)

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.